National Glass

Established in 1924, Hartung Glass Industries is one of the leading full-service glass companies in North America. Based in Union City, Calif., the company specializes in providing a wide range of glass and shower-door solutions. With tempering furnaces in multiple locations, it caters to the architects, designers, glazing contractors and glass companies. The firm supplies different brands like Agalite, Hurtung Studio, Lami Glass and Holcam. Its service area includes Seattle, Wash.; Wilsonville, Ore.; Pueblo, Colo.; South Bend, Ind. and Arlington, Texas.